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Lophotrichum-like? on dung of cow with smallish spores - Denmark
Thomas Læssøe,
04-07-2024 21:30
spores dark, subcitriform, ca. 6.2 x 3.9 µm, asci 8-sporede, quickly dissolving, with spores in a dark column - Chaetomium-style. Ascomata tiny; peridium thin, palel with very long, pointy setae
Any suggestions would be most welcome :-)
cheers
Thomas
Michel Delpont,
05-07-2024 08:40
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Hello Thomas.
Interesting find. Did you manage to see if the spores had 1 or two pores?
Michel.
Thomas Læssøe,
05-07-2024 09:30
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Not with certainty but some spores have tiny papilla each end suggesting a biporous situation.
cheers
Thomas
cheers
Thomas
Peter Welt,
07-07-2024 13:16
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
It is certainly not the species and according to Guarro et al (20122: 53) there is no species with such narrow spores. The species is pictured here.
I would consider Kernia. Key in Doveri 2004
I'm working on an article on the Microascaceae on manure and am looking for the article on Lophotrichus (see above)
cheers Peter
David Malloch,
07-07-2024 14:02
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
The ascospores have a greenish colour. Perhaps a species of Chaetomium?
Thomas Læssøe,
08-07-2024 11:27
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Maybe - I have never seen Chaetomium with such tiny ascomata, but I also no longer have a strong belief in Lophotrichum as the correct generic home but I likewise cannot find a match in Kernia.
Michel Delpont,
08-07-2024 11:51
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Despite searching I haven't found a genre that really matches either. I am not also thinking of Kernia or Lophotrichum. There are Chaetomium species that have not yet been described, but perhaps more details are needed to be truly sure of this very complex genus.
Michel.
Peter Welt,
08-07-2024 12:53
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
The first question is whether the fruiting body has an ostolium or not. If it's a Chleistotecium it could be Kernia. Based on your spore measurements and hair, it could be Kernia setadispersa
Here from my key that I'm currently creating.
Ascomata covered with 10–30 more or less flexible black hairs, spores ovoid, with a germ pore, 5-6 x 3.5-4.5 µm
Peter
Thomas Læssøe,
08-07-2024 13:19
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
based on the column of spores - Chaetomium-like - we must assume that an ostiole is present
Peter Welt,
08-07-2024 13:33
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Ok, then good luck searching in the genus, or rather in the genera, that are being presented today by Wang et al. By the way, it should no longer make any difference whether cleistothecium or perithecium. The genus Chaetomidium has virtually been crushed.Sometimes it's not fun anymore. Cheers Peter
Michel Delpont,
08-07-2024 14:27
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
Peter, if we can have your key that would be very useful!
Thank you.
Michel.
Peter Welt,
08-07-2024 15:07
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
After publication in Boletus November 2024, with pleasure. Dear Michael. I can't shoot my powder. Laugh
The key is in Doveri (2004) and I have only added and corrected it.
Peter
Michel Delpont,
08-07-2024 15:31
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
ok Peter, danke für die antwort!
Michel.
Adrian Carter,
08-07-2024 22:23
Re : Lophotrichum-like? on dung of cow with smallish spores - Denmark
It could be a Chaetomium. You could try my key. See adriancartermycology.ca (Chaetomoum thiseis). It's best if you can get it culture.
Hope this helps
Hope this helps